//// ruler.cpp using recursion to subdivide a ruler
//#include <iostream>
//const int Len = 66;
//const int Divs = 6;
//void subdivide(char ar[], int low, int high, int level);
//int main()
//{
//	char ruler[Len];
//	int i;
//	for (i = 1; i < Len - 2; i++)
//		ruler[i] = ' ';
//	ruler[Len - 1] = '\0';
//	int max = Len - 2;
//	int min = 0;
//	ruler[min] = ruler[max] = '|';
//	std::cout << ruler << std::endl;
//
//	for (i = 1; i <= Divs; i++)
//	{
//		subdivide(ruler, min, max, i);
//		std::cout << ruler << std::endl;
//		for (int j = 1; j < Len - 2; j++)
//			ruler[j] = ' ';		//reset to blank ruler
//	}
//	return 0;
//}
//
//void subdivide(char ar[], int low, int high, int level)
//{
//	if (level == 0)
//		return;
//	int mid = (high + low) / 2;
//	ar[mid] = '|';
//	subdivide(ar, low, mid, level - 1);
//	subdivide(ar, mid, high, level - 1);
//}